Machine for cutting shingles



UNITED STATES PATENT OFFICE.

TRUMAN WALCOTT, 0F STOW, MASSACHUSETTS.

MACHINE FOR CUTTING SHINGLES.

Specification of Letters Patent No. 1,932, dated January 20, 1841;Antedated September 5, 1840.

To all whom, t may concern:

Be it known that I, TRUMAN WALcoTT, of Stow, in the county of Middlesexand State of Massachusetts, have invented a new and Improved Mode ofCutting Shingles; and I do hereby declare that the following is a clear,full, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a part of thespecification, in which Figure 1 represents an elevation of the frontside; Fig. 2, a top view of the same; Fig. 3, an end view; Fig. 4, aView of the ratchet wheel and cams, and shaft to which they areattached.

Letters A, A, A, on Figs. 1, 2, 3, represent the frame work of themachine, into which the various parts of the machinery are placed.

Letters B. B, B, on Fig. 1, are the frame work which I term the gate.

Letter R on Fig. 1, is the knife which is attached to the gate by meansof bolts.

Letter X, on Fig. l, is the sweep attached to the gate, by which thepower is applied.

Letter WV, on Fig. 1, is the lever attached to th-e sweep, by which thepower is also applied.

Letter O, on Figs. 1 and 3, is a small pin attached to the gate.

Letter G, on Figs. 1 and 3, is a slide affixed to the frame work of themachine.

Letter P, on Fig. 1, is a small pin attached to the slide Y.

Letter S on Figs. 1 and 3, is a spring attached to the slideG.

Letter L on Fig. 4, is a shaft.

Letter N on Fig. 4, is a ratchet wheel attached to one end of the shaftL.

Letters M, M, on Figs. 1, 2, 3 and et, are two cams, attached to theshaft L, at the end opposite the ratchet wheel N.

Letter E, on Fig. 2, is the head block to which the block of wood, to beoperated upon, is dogged.

Letters F, F, on Fig. 2, are two dogs, attached to the head block E.

Letters H, H, on Figs. 1 and 2, are two tooth gages, attached to thehead block E.

Letter K, on Fig. 3, is two small pulleys, attached to the frame work ofthe machine.

Letters D, D, in Figs. 1 and 3, are two weights attached to the headblock E, by means of a small cord running over the pulleys K.

Letters C, C, on Figs. 1 and 2, are two v shippers aiixed horizontallyin engaging and disengaging with the tooth gages H, H, as hereinafterdescribed.

Letters U, U, on Fig. 1, are two hook pins attached to the frame work ofthe machine.

Letter T, on Fig. 1, is two spiral springs att-ached to the side of eachshipper C, C.

The gate B, works in a rabbet formed in the oblique frame, shown on Fig.l; which is held in bv the hoop pins U, and which acts up and down. Themotion upward acts upon the slide G, and vspring' S, by means of the pinO, on the gate B, striking the pin P in the slide G, which pin raisesthe slide G and the spring S, (which afiixes itself to the ratchet wheelV, by the mo-tion of the gate downward) suiiicient to turn the ratchetwheel N, one quarter around, which gives the same motion to the shaft Land cams M M; the motion of which one of the cams forces out the shipperC, which is engaged with the two tooth gages H, H, by means of thespring T, the other shipper C, engages with the two tooth gages H H. Thenext motion of the gate upward acts on the other shipper that is engagedwith the two tooth gages H H. The disengaging of the shipper from thetoo-th gage H H, feeds up the head block E, to the knife, by means ofthe weights D D, the thickness of a shingle.

The block of wood to be operated upon is Vattached to the head block bymeans of the two dogs F F, which can be tightened at pleasure by meansof a small tooth stop attached to the head bloc i E.

What I claim as mv invention and desire to secure by LettersPatent, is-

The combination of the ratchet wheel, cams, shippers, and tooth gages,for the purpose and in the manner specied.

TRUMAN WALCOTT. [1.. s]

fitnessest GEORGE Q. RICE,

FRANKLiN RICE.

